31224144211013 has 16 divisors (see below), whose sum is σ = 33670900574976. Its totient is φ = 28783824413760.

The previous prime is 31224144210979. The next prime is 31224144211063. The reversal of 31224144211013 is 31011244142213.

It is not a de Polignac number, because 31224144211013 - 2¹⁰ = 31224144209989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224144211063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33102506 + ... + 34032692.

It is an arithmetic number, because the mean of its divisors is an integer number (2104431285936).

Almost surely, 2^{31224144211013} is an apocalyptic number.

It is an amenable number.

31224144211013 is a deficient number, since it is larger than the sum of its proper divisors (2446756363963).

31224144211013 is a wasteful number, since it uses less digits than its factorization.

31224144211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933644.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 31224144211013 its reverse (31011244142213), we get a palindrome (62235388353226).

The spelling of 31224144211013 in words is "thirty-one trillion, two hundred twenty-four billion, one hundred forty-four million, two hundred eleven thousand, thirteen".